Subject:
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Re: Detecting tilt with an Accelerometer.
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 21 Oct 2002 17:32:16 GMT
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Original-From:
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T. Alexander Popiel <popiel@wolfskeep.comIHATESPAM>
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Viewed:
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838 times
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In message: <CAEBIOGHPFFJALBLJBEDCEHBECAA.rhempel@bmts.com>
"Ralph Hempel" <rhempel@bmts.com> writes:
> > I've had discussions lately with a VERY large number of people about
> > using an accelerometer to detect if an object (like a LegWay) is tilting.
> >
> > I'd like to continue the discussion here, with anyone willing to talk about • it.
> >
> > Let me start by saying, "It won't work."
>
> Let me chime in and say "It won't work"
>
> Tilt detection is almost always done using a simple inclinometer. This
> is just a weighted pendulum on a potentiometer or shaft encoder.
Umm... that is a type of accelerometer, unless there's a terminology
difference that I'm not aware of. (Consider what happens to the
sensor when pushed sideways (not on axis) without rotation... you
get transient swings representing the acceleration. The steady state
of the sensor is just measuring angle of acceleration due to gravity.)
- Alex
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Message has 1 Reply:
 | | Re: Detecting tilt with an Accelerometer.
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| A typical micromachined accelerometer WILL measure tilt of a platform that is not otherwise accelerating. The value the sensor returns will be g*sin(tilt angle) if the sensor is placed level on/in the platform. If the platform is accelerating, the (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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Message is in Reply To:
| | RE: Detecting tilt with an Accelerometer.
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| (...) Let me chime in and say "It won't work" Tilt detection is almost always done using a simple inclinometer. This is just a weighted pendulum on a potentiometer or shaft encoder. Now, that being said, could figure out that an object is rotating (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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